I'm having the same issues. When I'm driving on the street and let go of the gas coming to a stop light it would go in limp more and I would get the trans indicator malfunction light.
What people have suggested so far and what I've seen is:
1.replace transmission
2.new tcm
3.update/coding tcm/
4.replace maf

So my question is what is the real problem?ive yet to see an answer to this solution without people dumping money and still not fixing the problem.